Continuous rod-mill.



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CONTINUOUS R 0 D M l L L.

ooooooooo Patented May I4, |90|. J. B. NAU 8.1. BATTE-nsw.

CUNTINUOUS ROD MILL.

(Application led Dec. 18, 1900.)

2 Sheets-Sheet 2.

(No Model.)

, INVENTORS:

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JOI-IN B. NAU AND THOMAS BATTERSBY, OF ASTORIA, NEW YORK.

CONTINUOUS ROD-NEILL.

SPECIFICATION termi-ng part of Letters Patent No. 674,01 1, dated May 14, 1901.

Application filed December 18, 1900. Serial No. 40,276.' (No modeli) To @ZZ whom it' may concern:

Be it known that we, JOHN B. NAU and THOMAS BATTERSBY, citizens of the United States, residing in Astoria, Long Island, New York city, State of New York, haveinvented certain new and useful Improvements in Continuous Rod-Mills, of which the following is a specication.

The invention relates particularly to the twistingguide which receives a rod from one set of rolls and gives it a partial rotation to present it properly to the groovesof an adjacent set of rolls. Ordinarily the rolls of a continuous rod-mill are so grooved that the shape of the bar operated upon by them is alternately changed from an oval cross-section to a square or diamond shaped cross-section of reduced area, and vice versa, alternately, the number of operations being determined by the number of sets ot' rolls in the series which act to gradually reduce the rod to a decreasing cross-sectional area.

Heretofore twisting-guides placed. between the rolls to receive the rod from one set of rolls and deliver it to the adjacent set have been employed; but their use has been attended by the objection that the rod emerging froma set of rolls will sometimes escape the Twister, requiring the stopping of the mill for a short time and occasioning annoyance, trouble, and expense.

I-Ieretofore there have been employed twisting-guides either made in one piece or divided longitudinally and composed, essentially, of the twisting-guide proper, one open end of which is arranged adjacent to the grooves iu the delivery-rolls to receive the rod therefrom. If such a device is made in one piece or in two pieces which may be clamped together, it has been found that it is diiijcult to adjust the open end of the guide properly contiguous or adjacent to the grooves in the.

delivery-rolls and that if the proper contiguity to the groove of the upper roll, for instance, is established there is a liability of there not being a lt between the lower part of the guide and the groove of the lower roll, and vice versa, and therefore, and as those familiar with continuous rod-mills understand, it not infrequently happens in practice that the rod emerging from the groove of the delivery-roll does not enter the twistingguide,

the two parts appropriately secured together when the twister is in operation, comprises a straight guide arrangementplaced between the delivery-rolls and the twister proper and made of two separable pieces, of which the upper one or top cover can always be put in' close contact with the upper roll, the groove of which it will snugly lit, and the lowerone or bottom guide will always be in close contact with the lower roll. These two pieces top cover and bottom guide-will form a complete closure, and on account of their close contact with the delivery-rolls the rod will be safely led through them to the twister, which in its turn will deliver it properly to the next set of rolls.

In the accompanying drawings, which illustrate our invention embodied in a form which we have by experience demonstrated to be practical and efficient, and which is the form now best known to us, Figure l is a vertical section at right angles to the axes of the rolls, showing two seis of rolls of a contin nous rodmill having an indeiinite number of sets of rolls; Fig. 2, a plan view, omitting the housing or side frame, which appears in Fig. l; Fig. 3, an elevation, on anenlarged scale, of the rod-receiving end of the guide arrangement; Fig. 4, a similar elevation, on an enlarged scale, of the rod-delivery end of the twister; Fig` 5, an elevation, on an enlarged scale, of the receiving end of the ordinary entry-guide for receiving a rod from the twister and directing it to the grooves of the succeeding set of rolls.

A indicates the side frames or housings in which the sets of rolls B B' and O O' are mounted.

E and F are cross-bars extending between the side frames and located between the two sets of rolls.V

The frame or support of the twisting-guide, called guide-box, may be constructed as i ted to receive the bolt g, thatclamps it to the cross-bar E. From the front end of the bottom and at each side thereof are horizontallyprojecting parallel parts G2, and at the sides are vertical walls or side plates g g. Near the rear of the frame the side walls are formed with opposite vertical grooves or recesses g2, which are connected at their bottom by a corresponding circular groove or recess g3 in the bottom plate. The twisting-guide or twister is formed with a surrounding annular flange H', which lits in these grooves, the twister being dropped in from the top. The exterior surfaces of the twister being cylindrical, the twister rests upon the correspondingly-curved face of the bottom G of the guide-box and when set in the desired position may be rigidly held by any appropriate means, as by a wedge-bar I, passing through apertures in the side plates g. Of course it would be feasible in many cases to form the face of the bottom plate at and correspondingly shape the under face of the twister; but the construction described is preferred, as it permits of circumferential adjustment should it be desired. In front of the front end of the twister there is an inwardly-projecting rib or flange K, extending along both side plates and across the bottom, as seen in the various figures. In front of this rib the two separable parts of the straight guide arrangement are mounted. The bottom piece L has its front end formed, as at l, to conform to the groove in the lower roll, to which it is to be applied and which in the drawings happens to be a groove for rolling the rod to an oval cross-section'with its longer axis horizontal. Its rear end Z rests upon the flat face of the bottom G in front of the rib or flange K, and adjacent to this end there is a downwardly-extending projection Z2, which abuts against the front edge of the bottom G. The upper face of this bottom piece L is straight longitudinally and concave transversely, so that it is appropriately shaped to receive the oval rod from the rolls. The upper portion or cover M of the guide or channelhas side flanges m, which extend downwardly and fit loosely against the side edges of the bottom piece L. At the rear the side fl-anges of the cover-piece M rest upon the horizontal projections G2 G2 of the bottom of the frame and also upon the bottom of the frame immediately in front of the rib or flange K. The forward end of the cover Ml of the guide is shaped, as shown, to conform to thel groove in the Lipper roll and may be accurately fitted or adjusted thereto, and then held securely in position by any appropriate means, as by a wedge-bar N. Any slight vertical adjustment that may be desired of the end of the part M contiguous to the rolls mayl be effected by placing pieces, for instance, of sheet metal between the edges .of the side flanges and the part upon which it rests.

When properljT set, the part M is securely held by any appropriate means,as by a wedgebar N. The lower part L of the guide is held in position by the lower roll, in the groove of which it lies, while any end thrust of this part is transmitted by the lug or projection l2 to the bottom plate G.

The opening h of the twister proper, H, adjacent to the guide M L is circular in crosssection, as seen by the dotted circle, also marked h in Fig. 4. Its cross-section then gradually changes until at its most contracted part it is oval in cross-section with its axis horizontal, as indicated by the dotted lines h, Fig. et. From thence tothe rear or exit end of the twister this passage, oval in crosssection, twists until the longer axis of the oval is in thel position or about the position, with reference to a horizont-al line, such as shown in Fig. 4, where the opening is marked 7a2. The purpose is to turn the bar through ninety degrees-4l. e., so that its longer axis will be vertical; but in order to accomplish this it i-s not necessarythat the exit-opening of the twister should have its longer axis vertical; but, on the contrary, such axis may be at an angle to a' horizontal line and thel impetus or rotary momentum of the rod emerging from the twister will bring its longer axis into a vertical position. This is well understood. The angle at which the longer axis of the delivery-opening of the twister may stand depends upon the speed of the rolls and the weight of the rod being acted upon. From the twisting-guide the rod passes to an ordivnary entry-guide O, mountedv in a guide-box O', secured to the cross-bar F. In the front or receiving end of this guide the opening is or may be wider in cross-section, and from thence tapers until at its most contracted part it is ovall with the longer axis vertical', as indicated in Fig. 5.

We have shown the twisting-guide so shaped as to receive an oval rod with its longer axis horizon-tal and effect its turning ultimately to an angle of ninety degrees to bring its longer axis vertical. As indicated in Fig. 2, the succeeding set of rolls C C hasgrooves to reduce the rod to a square or diamond shaped crosssection. The twisting devices for receiving a rod of such cross-section from the rolls C C' would be in all respects the same as would the entry-guide, except that their interior opening would be of proper cross-section to receive and act upon a rod of square or diamond shaped cross-section. This is well understood, andin ordinary twisting devices for continuous rod-mills the dies are so alternated in character.

We claim as our inventionl. In a continuous rod-mill the 4combination of the twisting-guide, a guide-box upon which it is mounted and the separate guide or channel placedv between the delivery-'rolls and twisting-guide proper and composed of upper and lower parts independently held in the guide-box and respectively adapted to be IOO IIO

independently tt-ed to the groove of the upper roll and the groove of the lower roll.

2. In a. continuous rod-mill the combination of the twisting-guide, its frame or support, its flange-and-groove connection by which the guide is adjustably mounted in its support and a separate guide-channel placed between the delivery-rolls and twisting-guide proper and composed of upper and lower parts independently held in the guide-box lind respeetively adapted to be independently fitted to the grooves of the upper and lower rolls.

3. In a continuous rod-mil1, the combination with e suitably-mounted twisting-guide, of e guide or channel mounted in front of the twisting-guide and com posed of sepa-rete upper and lower parts independently mounted and respectively adapted to be independently itted to the upper and lower grooves of the rolls.

4. In a continuous rod-mill the eombination with a. suitably-mounted twisting-guide, of u guide or Channel suitably mounted in front of it and composed of two separately-adjustable parts, a bottom portion whose forward end may be fitted to the groove of the lower roll of the mill anda top portion having side flanges embracing the sides of the the groove of the upper roll and having side l flanges embracing the sides of the lower part.

6. In e continuous rod-mill, the combination with a suitably-mounted circumferentially-adjusteble twisting-guide, of a guide or Channel mounted in front of it composed of two separatelyformed and independentlymounted adjustable parts, a lower part ttin g the groove of the lower roll of the mill, and an upper part adapted to be independently tted to the groove of the upper roll.

In testimony whereof we have hereunto subscribed our names.

JOHN B. NAU. THOS. BATTERSBY.

Witnesses:

MINNIE COLLINS, J. R. THOMPSON. 

